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r33drichards/mcp-js

v0.4.0 Breaking

This release includes 3 breaking changes for platform teams planning a safe upgrade.

Published 3mo MCP Developer Tools
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

javascript mcp mcp-server

Summary

AI summary

Refactor execution model to use console output instead of return values, removing the module result capture mechanism.

Full changelog

What's Changed

  • Add GitHub API token injection tutorial by @r33drichards in https://github.com/r33drichards/mcp-js/pull/64
  • Remove snapshot directory by @r33drichards in https://github.com/r33drichards/mcp-js/pull/65
  • Add comprehensive end-to-end tests for console.log capture and async execution by @r33drichards in https://github.com/r33drichards/mcp-js/pull/67
  • Implement async execution tracking with console output streaming by @r33drichards in https://github.com/r33drichards/mcp-js/pull/66
  • Document async execution model and console output features by @r33drichards in https://github.com/r33drichards/mcp-js/pull/68
  • Add Docker image for Open Policy Agent server by @r33drichards in https://github.com/r33drichards/mcp-js/pull/69
  • Run OPA container with non-root opa user by @r33drichards in https://github.com/r33drichards/mcp-js/pull/71
  • Refactor execution model to use console output instead of return values by @r33drichards in https://github.com/r33drichards/mcp-js/pull/72
  • Remove module result capture mechanism from ES module execution by @r33drichards in https://github.com/r33drichards/mcp-js/pull/74
  • Add ES module import support with esm.sh integration by @r33drichards in https://github.com/r33drichards/mcp-js/pull/75
  • Add ES module import support with npm:/jsr:/URL resolution by @r33drichards in https://github.com/r33drichards/mcp-js/pull/70
  • Simplify StatelessMcpService to synchronous shell mode by @r33drichards in https://github.com/r33drichards/mcp-js/pull/76
  • Remove DEFAULT_HEAP_MEMORY_MAX_MB constant and inline heap limit by @r33drichards in https://github.com/r33drichards/mcp-js/pull/77
  • Add external module import policy enforcement via OPA by @r33drichards in https://github.com/r33drichards/mcp-js/pull/78

Full Changelog: https://github.com/r33drichards/mcp-js/compare/v0.3.0...v0.4.0

Breaking Changes

  • Removed module result capture mechanism from ES module execution
  • Refactored execution model to use console output instead of return values
  • Removed DEFAULT_HEAP_MEMORY_MAX_MB constant and inlined heap limit
View diff on GitHub

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About r33drichards/mcp-js

A Javascript code execution sandbox that uses v8 to isolate code to run AI generated javascript locally without fear. Supports heap snapshotting for persistent sessions.

All releases →

Related context

Earlier breaking changes

  • v0.11.0 Switch license from ISC to GNU Affero General Public License v3

Beta — feedback welcome: [email protected]